I find it hard to do things in stages. Once I start something, I like to finish it. It is part of perseverating a fixating on any given task and transitioning holds for waking and sleeping. I find it hard to transition into sleeping and equally as hard to wake back up.
For this reason, I write all my blog posts for the day the night before. I can faces on them all at once, and I do not need to worry about waking up. To wake up an 8:00 to write a blog post does not work for me I tried it over Saturday and Sunday.